Inheritance and Estate Tax in Japan

Japan imposes two distinct levies on gratuitous transfers: inheritance tax (sozoku-zei, administered under the Inheritance Tax Act, Act 73 of 1950) and gift tax (zoyo-zei, administered under the same Act). Both are administered by the National Tax Agency (NTA, Kokuze-icho). The combined framework is widely cited as one of the most burdensome among OECD nations, with a 55% top rate that applies per heir rather than to the estate as a whole -- a design that amplifies the effective burden when estates pass to a small number of heirs.

How does the 10--55% progressive rate scale work?

Japanese inheritance tax uses a statutory-share method: the taxable estate is first divided among heirs according to their Civil Code statutory shares, and the graduated rate table is applied to each individual share. The total hypothetical tax is then aggregated and allocated proportionally to what each heir actually receives. Eight brackets apply (National Tax Agency, Tax Answer No. 4155):

Because the 55% bracket activates at JPY 600 million per individual heir share -- not per total estate -- concentrated estates passing to one or two heirs are especially exposed. A JPY 1.2 billion estate split evenly between two children places each child squarely in the 55% bracket, whereas the same estate split among six statutory heirs would land each in the 30% bracket. PwC's Japan individual tax summary confirms these rates apply to deaths and to gifts assessed at the top gift-tax schedule.

What is the basic exclusion and how does it scale with heirs?

Before rates apply, the estate is reduced by the basic exclusion (kiso kojo) under Article 15 of the Inheritance Tax Act. The formula is: JPY 30 million + (JPY 6 million x number of statutory heirs). Statutory heirs are those recognized under the Civil Code: the surviving spouse plus children (or grandchildren by representation if children have predeceased); ascending to parents if there are no descendants; ascending to siblings if there are no surviving parents. Only the number of heirs counts for the exclusion formula -- their actual shares do not affect the threshold.

Example: a decedent survived by a spouse and two adult children has three statutory heirs, so the basic exclusion is JPY 30M + (3 x JPY 6M) = JPY 48 million. An estate valued below JPY 48 million generates no inheritance tax at all. The exclusion was reduced in January 2015 from the prior formula of JPY 50 million plus JPY 10 million per heir -- that reduction roughly doubled the proportion of Japanese deaths generating inheritance-tax liability (National Tax Agency data).

Additional exclusions apply for life insurance proceeds (JPY 5 million per statutory heir) and retirement benefit lump sums (JPY 5 million per statutory heir), each excluded separately and not combined.

What is the spousal credit and how large is it?

The spousal credit (haigūsha no zei-gaku no keisan no tokure) is the most powerful single mitigation in the sozoku-zei framework. Under Article 19-2 of the Inheritance Tax Act, the tax attributable to the surviving spouse is reduced to zero on whichever is greater: (a) JPY 160 million, or (b) the spouse's statutory share of the total taxable estate (typically 50%). In practice, a surviving spouse who inherits up to JPY 160 million pays no inheritance tax regardless of the estate's total size. For larger estates, the spouse's 50% statutory share may exceed JPY 160 million -- at that point the statutory-share figure governs, and the excess above 50% remains taxable.

The credit requires: (1) the marriage to be legally registered on the family register (koseki), (2) finalization of the estate division within the filing deadline (with exceptions for late settlement), (3) filing of an inheritance-tax return even where the credit reduces tax to zero, and (4) no concealment of assets by the spouse. Well-structured estate plans commonly concentrate the first-generation transfer toward the spouse to maximize credit utilization.

Supplementary credits also reduce the bill for other heirs: minor heirs under age 18 receive JPY 100,000 per year remaining to age 18; disabled heirs receive JPY 100,000 per year remaining to age 85 (JPY 200,000 for severely disabled heirs); and a successive-inheritance credit mitigates double taxation where an heir inherited assets from the same decedent within the prior 10 years.

How does gift tax (zoyo-zei) work and what is the annual exclusion?

Japanese gift tax is levied on the recipient (not the donor) on the total value of gifts received from all sources during each calendar year (January 1 through December 31). The annual basic exclusion is JPY 1.1 million per recipient -- gifts totaling less than JPY 1.1 million in a year generate no gift-tax obligation and no filing requirement (NTA guidance No. 15002). Above the exclusion, two progressive schedules apply depending on the donor-recipient relationship:

• General schedule (gifts from non-lineal parties or to minor children): starts at 10% on the first JPY 2 million above the exclusion, reaching 55% above JPY 30 million.
• Special schedule (gifts from lineal ascendants aged 60 or older to adult descendants aged 18 or older): wider brackets produce lower effective rates at medium amounts -- 10% to JPY 2 million, scaling to 55% only above JPY 45 million.

The gift-tax return and payment are due between February 1 and March 15 of the year following receipt. An alternative system -- the Settlement Taxation System (sosei kasanseidō) -- allows certain donor-recipient pairs (lineal ascendant aged 60 or older to adult descendant aged 18 or older) to elect a lifetime special deduction of JPY 25 million combined with a flat 20% rate on any excess, with cumulative gifts netted against inheritance tax at death. Under the 2023 tax reform (effective January 1, 2024), an additional annual deduction of JPY 1.1 million within the settlement system allows those elected amounts to remain entirely outside the estate at death, not merely prepaid.

Who is subject to worldwide inheritance tax -- and what is the expat/situs rule?

Residency status at the time of death (or gift) determines whether Japanese inheritance tax reaches worldwide assets or only Japan-situs property. The framework distinguishes two visa categories (Vialto Partners, February 2024):

Table 2 visa holders (permanent resident, spouse or child of a Japanese national, long-term resident) are subject to unlimited worldwide inheritance and gift tax liability from day one, regardless of how many years they have been in Japan. Converting a work visa to a permanent resident visa -- a step many residents take for mortgage eligibility -- immediately triggers worldwide exposure with no phase-in period.

Table 1 visa holders (work visas, engineer, specialist in humanities, student, and most temporary-category visas) are subject only to Japan-situs asset taxation if the decedent or donor maintained a principal domicile (jusho) in Japan for 10 years or fewer out of the preceding 15 years. If the Table 1 holder has resided in Japan for more than 10 of the last 15 years, worldwide assets become taxable. The 10-year clock resets only if the person leaves Japan and does not reestablish domicile within 2 years of departure.

Japanese nationals and individuals domiciled in Japan at the time of death face worldwide asset taxation regardless of nationality. Foreign-paid inheritance tax on foreign-situs assets may be credited against the Japanese tax on the same assets under Article 20-2, preventing full double taxation -- but the credit is proportional, not a full offset, and the net burden can still be significant for large cross-border estates. A broader discussion of residency classification appears in the Japan country overview.

What changed with gifts made before death -- the 3-year to 7-year lookback?

Prior to January 1, 2024, gifts made to heirs within 3 years before the donor's death were included in the taxable estate for inheritance-tax purposes (the "deathbed gift" add-back rule). Under the 2023 tax reform, this period is being extended to 7 years on a phased schedule (National Tax Agency, No. 15001 guidance; ichinotax.com analysis 2024):

• Gifts made before December 31, 2026: add-back period remains 3 years.
• Gifts made between January 1, 2027 and December 31, 2030: add-back period graduates toward 7 years.
• Gifts made on or after January 1, 2031: full 7-year add-back period applies.

For gifts caught in the extended window (years 4 through 7 before death), a JPY 1 million aggregate deduction applies against the value added back -- a partial relief intended to reduce the compliance burden of tracking small historical gifts. This reform significantly affects long-term wealth-transfer timing; gifts made more than 7 years before death are entirely clear of the estate.

Separately, the education-fund lump-sum exemption (which permitted up to JPY 15 million per grandchild via a dedicated trust) was permanently abolished on March 31, 2026.

Given Japan's complexity -- the interaction of statutory-share mechanics, the spousal credit, the expat visa-category rules, the gift-to-estate lookback extension, and the settlement taxation election -- the most reliable first step for anyone facing a Japanese estate is a consultation with a registered Japanese certified tax accountant (zeirishi), particularly one experienced in cross-border inheritance matters.